Luna came out of the bullpen as a freshman for Cal State-L.A. in 2012. In 18 appearances, Luna pitched 15.1 innings, struck out ten batters and earned a pair of saves.
Prior to Cal State: Luna was the Camino Real League Pitcher of the Year in 2011. He posted a 10-4 record with a microscopic 1.02 ERA to earn the honor. Luna also had six complete games and a save on the season.